# CDDLibrary not defined

**URL:** <https://discourse.julialang.org/t/cddlibrary-not-defined/30512>\
**Category:** Optimization (Mathematical)\
**Created:** [October 30, 2019, 7:07pm UTC](https://discourse.julialang.org/t/cddlibrary-not-defined/30512 "2019-10-30T19:07:56Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![squirrel](https://avatars.discourse-cdn.com/v4/letter/s/96bed5/32.png) [@squirrel](https://discourse.julialang.org/u/squirrel)\
**Post date:** [October 30, 2019, 7:07pm UTC](https://discourse.julialang.org/t/cddlibrary-not-defined/30512/1 "2019-10-30T19:07:56Z")

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The packages were installed. Why is this telling me CDDLibrary is not defined?

```julia
using Pkg
Pkg.add("Polyhedra")
Pkg.add("CDDLib")

using CDDLib
polyf = polyhedron(hrep, CDDLibrary())

```

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<div class="post-metadata">

**Author:** ![blegat](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/blegat/32/217090_2.png) [@blegat](https://discourse.julialang.org/u/blegat)\
**Post date:** [October 30, 2019, 7:48pm UTC](https://discourse.julialang.org/t/cddlibrary-not-defined/30512/2 "2019-10-30T19:48:18Z")

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It is now called `CDDLib.Library`